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In-vivo viscous properties of the heel pad by stress-relaxation experiment based on a spherical indentation

Title
In-vivo viscous properties of the heel pad by stress-relaxation experiment based on a spherical indentation
Authors
Suzuki R.Ito K.Lee T.Ogihara N.
Ewha Authors
이태용
SCOPUS Author ID
이태용scopus
Issue Date
2017
Journal Title
Medical Engineering and Physics
ISSN
1350-4533JCR Link
Citation
vol. 50, pp. 83 - 88
Keywords
DampingFinite element analysisFootPlantar soft tissue
Publisher
Elsevier Ltd
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Identifying the viscous properties of the plantar soft tissue is crucial not only for understanding the dynamic interaction of the foot with the ground during locomotion, but also for development of improved footwear products and therapeutic footwear interventions. In the present study, the viscous and hyperelastic material properties of the plantar soft tissue were experimentally identified using a spherical indentation test and an analytical contact model of the spherical indentation test. Force-relaxation curves of the heel pads were obtained from the indentation experiment. The curves were fit to the contact model incorporating a five-element Maxwell model to identify the viscous material parameters. The finite element method with the experimentally identified viscoelastic parameters could successfully reproduce the measured force-relaxation curves, indicating the material parameters were correctly estimated using the proposed method. Although there are some methodological limitations, the proposed framework to identify the viscous material properties may facilitate the development of subject-specific finite element modeling of the foot and other biological materials. © 2017 IPEM
DOI
10.1016/j.medengphy.2017.10.010
Appears in Collections:
엘텍공과대학 > 휴먼기계바이오공학부 > Journal papers
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